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BS EN 1254-5:2021

BS EN 1254-5:2021

$142.49

Copper and copper alloys. Plumbing fittings – Capillary fittings with short ends for brazing to copper tubes

Published By Publication Date Number of Pages
BSI 2021 26
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This document specifies product characteristics, assessment methods, compliance criteria of the test results and a designation system for capillary fittings with short ends for brazing to copper tubes e.g. EN 1057, EN 13348, EN 13349, EN 12735?1, EN 12735?2, etc. These fitting ends exist in two forms: end feed fittings and integral brazing ring fittings. For the purposes of joining copper tubes, the fitting ends have a nominal diameter from 14,7 mm to 159 mm. The fittings are designed for a service lifetime up to fifty years.

The fittings are used up to the operating temperatures and corresponding maximum operating pressures as indicated in Annex A.

This document applies to copper alloy fittings. A non-exhaustive list of these copper alloys is given in CEN/TS 13388.

The capillary fittings with short ends for brazing to copper tubes are used with brazing alloys in accordance with alloys specified in EN ISO 17672.

Not all copper alloys that can be used to manufacture fittings can be brazed and those that can be brazed may require different brazing techniques (guidance is provided in in EN 1254?20:2021, Annex A).

Fittings with short ends for capillary brazing may also have threaded end connections. These threaded ends exist with metallic and with non-metallic sealing elements. For the purposes of joining with tubes, pipes, fittings or valves, the threaded ends have a size range from 1/8” to 4”.

Adaptor fittings for use with copper tubes may combine short ends for capillary brazing with fitting ends defined in the other parts of EN 1254.

Capillary fittings with short ends for brazing may also have flanged end connections according to EN 1092?3.

Fittings can be produced by machining, metal forming, casting, or fabrication.

Products covered by this document are intended to be used in:

  1. liquid applications:

    1. hot, cold or combined hot and cold water, including systems according to EN 806 ;

    2. closed heating systems according to EN 12828 ;

    3. cooling systems;

    4. drainage systems;

    5. fire protection systems including sprinkler systems according to EN 12845 ;

    6. refrigeration systems;

    7. supply systems for points of consumption with liquid fuels according to EN 12514 .

  2. gas applications:

    1. natural gas and liquefied petroleum gas systems with a maximum operating pressure less than or equal to 5 bar according to EN 1775 ;

    2. gas line systems with an operating pressure exceeding 0,5 bar for industrial installations and exceeding 5 bar for industrial and non-industrial installations according to EN 15001?1 ;

    3. compressed air systems;

    4. medical gas systems according to EN ISO 7396 ;

    5. refrigeration systems.

PDF Catalog

PDF Pages PDF Title
2 National foreword
6 European foreword
7 Introduction
8 1 Scope
9 2 Normative references
3 Terms and definitions
4 Product characteristics
4.1 Internal pressure
4.2 Tightness
4.2.1 Leak tightness under internal hydrostatic pressure
10 4.2.2 Integrity of fabricated fitting bodies or having an ‘as cast’ microstructure
4.3 Release of dangerous substances
4.4 Durability
4.4.1 Durability of internal pressure: Resistance to stress corrosion
4.4.2 Durability of tightness: Residual carbon contamination in the bore
4.5 Dimensional tolerances of diameters
11 4.6 Wall thickness for short ends for capillary brazing to copper tubes
13 4.7 Wall thickness at threaded portions of adaptor fittings
4.8 Dimensions of tail pipe ends for swivel fittings
4.9 Dimensions of gas union connectors
4.10 Threaded end dimensions
4.11 Other adapter ends (not defined in EN 1254‑20:2021)
4.12 Length of engagement
15 4.13 Bore dimensions
4.14 Tube abutment
16 4.15 Alignment of the fitting ends
4.16 Shapes for tightening systems
4.17 Surface condition
4.18 Surface cleanliness for medical gases
17 5 Testing, assessment and sampling methods
5.1 General
5.1.1 Preparation of fittings for testing
5.1.2 Test temperature
5.1.3 Tolerances
5.2 Internal pressure
5.3 Tightness: Integrity of fabricated fitting bodies or having an ‘as cast’ microstructure
5.4 Durability
5.4.1 Durability of internal pressure: Resistance to stress corrosion
18 5.4.2 Durability of tightness
5.5 Dimensional tolerances of diameters
5.6 Wall thickness for short ends for capillary brazing to copper tubes
5.7 Wall thickness at threaded portions of adaptor fittings
5.7.1 Type testing
5.7.2 FPC testing
5.8 Dimensions of tail pipe ends for swivel fittings
5.9 Dimensions of gas union connectors
5.9.1 Type testing
5.9.2 FPC testing
19 5.10 Threaded end dimensions
5.11 Length of engagement
5.12 Bore dimensions
5.13 Alignment of the fitting ends
6 Evaluation of conformity
6.1 General
6.2 Type testing
6.2.1 General
20 6.2.2 Test samples, testing and compliance criteria
21 6.2.3 Test reports
6.3 Factory production control (FPC)
6.3.1 General
22 6.3.2 Equipment
6.3.3 Raw materials and components
6.3.4 Product testing and evaluation
23 7 Designation
8 Marking, labelling and packaging
24 Annex A (normative) Operating temperatures and corresponding maximum operating pressures
25 Bibliography

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BS EN 1254-5:2021
$142.49